Oil-well pump.



PATENTED JAN. '7, 1908.

W. WALLACE. OIL WELL PUMP. APPLICATION FILED mme, 190e.

@Mmmm WILLIAM WALLACE, OF BAKERSFIELD, CALIFORNIA.

OIL-WE LL PUMP.

Speccation of Letters Patent.

Patented Jan. '7, 1908.

Application led December 8. 1906. Serial No. 346,870.

To a-ZZ whom it may concer/nf:

Be it known that I, VILLIAM VALLACE, a citizen of the United States,residing at Bakersfield, in the county of Kern and State of California,have invented new and useful lmprovements in Oil-fell Pumps, of whichthe following is a specification.

My invention relates to certain new and useful improvements in oil wellpumps and articularly in a removable interchangeable ushing for theworking barrel thereof and a means for removing the bushing in unisonwith the working parts of the pump vfrom their containing cylinder orbarrel without removing said cylinder or barrel from the well.

My invention further relates to means for locking the removable bushingin place in the barrel; also in means for seating the standing valve ofthe pump in its barrel.

My invention consists, essentially, of a readily removable bushing whichis normally locked in position in the barrel but which, when the workingparts 'of the pump are to be removed, is released from its lockedposition during the initial part of the withdrawal of the said workingparts and is then removed by and in unison with said parts, withoutdisturbing the cylinder or barrel.

My invention also consists of suitably spring pressed latches whichengage the bushing to retain it in proper position in the barrel butwhich will yield to release the bushing to allow said bushing to beremoved by and with the working parts.

My invention further consists of the parts and the constructions,arrangements and combinations of parts which l will hereinafter describeand claim.

In the accompanying drawing forming part of this specification, Figure1, represents a vertical sectional view of an oil well pump embodying myinvention. Fig. 2, is' a detail of one of the striking blocks. Fig. 3 isan enlarged sectional detail of one of the pins 43 and a portion of thebushing 40.

In said drawings the standing barrel 10 is preferably made of cast ironalthough other character of material may be used if desired. Its lowerend has fitted to it a pipe section 11 which may represent the lower orsuction end of the pump barrel said barrel having a taering valve seat12.

Vithin the standing barrel is the standing valve 13 which is suitablypacked to snugly iit the interior of the barrel, said valve having atapered lower end to Afit the aforesaid tapered valve seat l2,v andhaving a passage through it, as usual, for the il'low of oil. Connectedto the upper end of the standing valve is a suitable cage 14 and withinsaid cage is a ball or other valve 15 which seats upon a valve seat 16,T his seat may be of any well known character: 1t is herein shown asbeing of the reversible type or capable of using either side uppermost,and it is held securely in place between a shoulder 17 on the cage andthe top end of the standing valve, the seat having a circumferentialflange which is clamped between these said surfaces.

The upper end of the standing barrel has an enlarged socket or chamber18 to which is fitted, as by screw threads between the parts, the lowerend of the cylinder or barrel 19 which 1 will hereinafter designate asthe intermediate barrel, said intermediate barrel having its upper endscrewed into engagement with the lower collar 20. The opening throughthis collar is cored out in the upper end to form an enlarged socket inwhich is screwed the lower end of the cylinder or jacket 21 whose upperend is screwed into engagement with the upper collar 22.

The jacket and intermediate barrel may be constructed of steel or ironpipe and will have such length and diameter as the particular well mayrequire.

The hollow pump plunger 23 is of slightly less diameter than theinterior of the intermediate barrel 1E) in which it operates. lts lowerend is threaded to a ring 24 of increased thickness, the lower end ofwhich is adapted to seat upon a striking block 25 of substantiallytriangular' form or a block whose edge is cut away at points toaccommodate the ilow of oil, said block being seated upon the top of thecage of the standing valve and Vfixed thereto by means of the rod 26whose lower end is threaded and screws through said block 25 and intothe top of said cage, a nut 27 being shown for the purpose ofmaintaining the parts in their proper position after being once fittedtogether as described.

By reason of the arrangement just above described it is apparent that inassembling the parts of the pump, the lower end or ring 24 of theplunger will strike the block. 25 and thereby positively seat thestanding valve upon the inclined seat 12 in the standing barreL-L'lherodg26 before mentioned, extends from the cage of the standing valveupwardly into the plunger for such distance as may be desired, and toits upper end is screwed or Otherwise fixed a striking block 28 which isdesigned to be engaged from below by the shoulder 29 of the ring 24 whenthe plunger is to be removed from the pump and it is desired to removethe standing valve and its adjuncts also.V

The upper end of the plunger is tted to a nipple or coupling 30 to whichthe upper valve cage 31 is also fitted, said cage inclosing the uppervalve 32 which normally rests upon a valve seat 33, substantially of theform of the seat already described for the valve 15, said cage having athreaded stem or projection 34 at its upper end adapted to be engaged bythe lower end of a connection or coupling 35 carried by the lower end ofthe adjusting rod 36, said rod having a flange or shoulder 37 just belowits upper threaded end upon which flange the striking block 38 isseated, and held by the lower end of the suction rod 39 being screwedupon the threaded stem extension of the adjusting rod.

The striking block 38 is substantially like the blocks 25 and 28 and isdesigned to rest upon the upper end of the bushing 40 in which bushingthe pump plunger operates with a snug sliding' lit. This bushing and themanner of detachably securing it forms the essential part of the presentinvention. It is made of cast iron or any other suitable Inaterial andfits snugly the interior of the acket 21 and forms the renewable wearingsurface therefor. The bushing may be of any desired length andthickness; as shown, it eX- tends between the top and bottom collars 22and 20 and its lower end enters the enlarged socket in the upper end ofthe lower collar and its lower end is beveled or tapered to snugly fit acorresponding seat 41 in the base of said socket and the lower edgeextends into the opening made through the bottom collar for the passageof the plunger, which plunger, as before mentioned, is of somewhat lessinterior diameter than that of the intermediate barrel 19 in which itoperates. The result of this construction is, that the lower edge of thebushing lies in the vertical plane of the projecting outer edge of thelower striking block 25 and will be engaged thereby when said block andits connected standing valve and adjuncts are lifted by the plunger toeffect their removal from the pump bar rel or cylinder.

Referring now to the upper collar 22, it will be seen that one or moreholes 42 are bored transversely therethrough, and in these holes areplaced headed-pins 43 backed by spring 43. The holes are closed by screwor other plugs 44 against which the springs seat and the inner ends ofthe pins engage an annular channel or groove 45 formed around theoutside of the bushing near the upper end, but which pins will yield torelease the bushing when said bushing is moved in an endwise direction.

From the foregoing description it will be understood that to assemblethe working parts of the pump, after the standing barrel, intermediatebarrel, and jacket have been coupled together and lowered to position inthe well, the bushing is placed in the upper section of the pump barrelor cylinder and the sucker rod to which has been appropriately coupledthe adjusting rod 36 plunger 40 and standing valve 13, and theiraccessories, is lowered into the pump cylinder until the striking block38 at the lower end of the rod 36 strikes the top of the bushing andnally shoves the bushing through the top collar and into the jacket 21of the working barrel until the lower tapered end of the bushing comesto a rm seating upon the inclined seat 41 formed in the bottom collar20, and the channel or groove 45 around the upper end of the bushing isbrought into register with the spring-pressed pins'43 when said ins willenter the channel or groove and ook the bushing in place. Cordinatelywith this seating the bushing, the lower end of the plunger 23 strikesthe block 25 on the upper end of the cage of the standing vvalve andthereby firmly seats this valve upon the tapered seat 12in the standingbarrel.

To withdraw the plunger and other working parts, the sucker' rod islifted, and through connections substantially as shown and described,the plunger is raised until the upper end or shoulder 29 of the ring 24which is fixed to its lower end contacts with the under side of thestriking block 28 on the upper end of the rod 26 when the standing valveis raised from its seat. At or about this time, the projecting or outeredge of the striking block 25 on the lower end of the rod 26 comes incontact with the lower edgel of the bushing and the continued upwardpull on the sucker rod and endwise movement of the bushing causes thespring-pressed pins 43 to be forced back thereby disconnecting them fromthe annular groove or channel 45 and allowing the bushing to be readilyv removed with the other working parts of the pump, for repair or forrenewal of parts. The bushing is thus interchangeable and may be removedand replaced with but little` difliculty, and by and in unison with theother working parts.

Having thus described my invention, what I claim as new and desire tosecure .by Letters Patent is,-

1. In an oil well pump, the combination of a working barrel, a bushingremovably seated therein and closely fitting the same, a 125.

plunger operable in the bushing, a standingvalve-mechanism, meanscarried by the plunger for unseating the standing-valve and supportingit from the plunger, and a strikingmember carried by the standing-valveand projecting beyond the plane oi the outer sides of the plunger, saidbushing having a part projected into the vertical plane of saidstriking-member and adapted to be engaged thereby whereby said bushingis unseated and removed by and in unison with the plunger andstanding-valve-mechanism.

2. In an oil well pump, the combination ofa working barrel, a bushingremovably seated therein, yieldable means engaging the bushing to lookit in the barrel, a plunger operable in the bushing, astanding-valvemechanism, means carried by the plunger for unseating thestanding-valve, and suspending it 'from the plunger, and astriking-member carried in unison with the plunger and standing-valve,said member adapted to engage the bushing to first unlock it and thenmove it lengthwise and finally remove it from the barrel cordinatelywith the removal of the plunger and standing-valvemechanism.

3. In an oil well pump, the combination with the working barrel thereof,the removable plunger and the standing valve, of normally-separatedcontacting members one carried by the plunger and the other carried bythe standing-valve, said plunger member contacting with the other memberwhen the plunger is elevated for removal, and unseating thestanding-valve and suspending said valve from the plunger, andnormallyseparated contacting members one on the bushing and the othercarried by the plunger,

said plunger carrying member contacting with the bushing-member to firstunseat the bushing and then remove it from the barrel in unison with theremoval of the plunger.

4. In an oil well pump, the combination with the exterior cylinder orjacket and the upper and lower collars to which its ends are secured,said lower collar having an internal bushing seat, a bushing fittingwithin the jacket with its lower end resting upon said seat, and itslower edge projecting interior thereto, a plunger Vlitting the bushing,said plunger carrying a striking-member which is adapted to contact withthe projecting edge of the bushing when the plunger is lifted forremoval, yieldable latches mounted in the upper collar and normallyengaging the bushing to hold it to its seat, said latches yielding torelease the bushing under the pressure exerted by the plungerstrikingmember against the lower end of the bushing whereby the plungerand bushing may be removed in unison.

5. In an oil well pump the combination of the standing barrel, theintermediate barrel fitted thereto, the lower collar to which the upperend of the intermediate barrel is fitted, an upper collar, a jacketextending between and having its ends fitted to said upper and lowercollars, a bushing fitting within the jacket and having an interiordiameter less than that oi the interior of the intermediate barrel, aseat formed on the interior of the lower collar lor the lower end oi thebushing, said bushing having its lower edge projecting inwardly ol theseat, a plunger and plunger suspending connections, said plunger iittingthe bushing and having an annular shoulder on its interior near thelower end, a standingvalve adapted to be seated in the standing barrel,said valve having a stem or rod fixed to its upper end and extendinginto the plunger, a striking-block fixed to the upper and lower ends ofsaid stem, said lower block having a greater diameter than that ol theeX- terior of the plunger and suflicient diameter to allow it to contactwith the lower edge of the bushing when raised to the plane thereof, thelower end of said plunger adapted to contact with said lower block toseat the standing-valve in its barrel, and the internal shoulder of theplunger adapted to engage the upper striking-block to unseat thestanding-valve, the arrangement of the parts being such that the plungerand standing-valve and their adjuncts and the bushing are removable lromthe working barrel of the pump in unisonA 6. The combination of thebarrel, a bushing fitting the same, upper and lower collars, said lowercollar having an internal seat for the lower end of the bushing, andsaid bushing having a channel or groove around its upper portion,spring-pressed locking-pins in the upper collar adapted to engage saidchannel or groove, to lock the bushing on its seat in the lower collar,a plunger operable in the bushing and means carried by the plungeradapted to contact with the bushing to unseat the same and disengage thelocking-pins, an adj Listing-rod connected to the plunger, a sucker-rodconnected to the adjusting-rod, and a striking-block fixed to or carriedin unison with the adjusting-rod and adapted to contact with the upperend of the bushing to seat said bushing.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

WILLIAM WALLACE.

Titnessesz T. F. ALLEN, JAMES Biemans.

